 body {
     margin: 0 20px;
     background-color: #f8f6f5;
     color: #383838;
 }
.picture{
    width: auto ;
    background-repeat: no-repeat;
    background-size: 100% auto;
    background-position: 50% 50%;
    height: 217px;
}

.meal_name{
    font-weight: bold ;
    margin-top: 20px;
    font-size: 25px;
}

.introduction{
    margin-top: 20px;
    line-height: 25px;
}
.material{
    border-bottom:1px solid lightgrey ;
    padding-bottom: 15px;
    margin-top: 20px;
    font-size: 20px;
    font-weight: bold ;
}
.material_list{
    color: darkred ;
    padding-top: 7px;
    padding-bottom: 7px;
    border-bottom:1px solid lightgrey;
    font-size: 16px;
}
.method{
    font-weight: bold ;
    margin-top: 20px;
    font-size: 20px;
}
.method_count{
    font-size: 26px;
    float: left ;
    font-family: sans-serif;
    font-weight: bold ;
}
.method_content{
    padding-left: 15px;
    padding-top: 3px;
    overflow: hidden ;
    font-size: 18px;
    font-weight: normal ;
    color: #383838;
}


.ul{
    line-height: 30px;
    padding: 0;
    list-style-type: none;
}
.tips{
    font-weight: bold  ;
    font-size: 15px;
    margin-left: 30px;
}
.tips_content{
    font-size: 15px;
    color: #777 ;
    margin-left: 30px;
}